agents

Class BayesianAgentForAuction

java.lang.Object

negotiator.Agent

agents.BayesianAgentForAuction

Direct Known Subclasses:

BayesianAgentForAuctionMultiPhase

public class BayesianAgentForAuction
extends Agent

Wrapper for opponentmodelspace, so that it is a neat utilityspace that we can give to the bidspace.

Author:

wouter

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	BayesianAgentForAuction.ACTIONTYPE
static class	BayesianAgentForAuction.PHASE
protected static class	BayesianAgentForAuction.ROLE

Field Summary

Fields

Modifier and Type	Field and Description
protected double	CONCESSIONFACTOR
protected OpponentModel	fOpponentModel
protected OpponentModel[]	fOpponentModels
protected Bid	fOpponentPreviousBid
protected BayesianAgentForAuction.PHASE	fPhase
protected BayesianAgentForAuction.ROLE	fRole
protected int	fSmartSteps
protected Action	messageOpponent
protected Action	myLastAction
protected Bid	myLastBid
protected java.util.ArrayList<Bid>	myPreviousBids
protected static int	NUMBER_OF_SMART_STEPS

Fields inherited from class negotiator.Agent

fNegotiation, parametervalues, sessionNr, sessionsTotal, startTime, strategyParameters, timeline, totalTime, utilitySpace

Constructor Summary

Constructors

Constructor and Description
BayesianAgentForAuction()

Method Summary

Methods

Modifier and Type	Method and Description
Action	chooseAction() this function is called after ReceiveMessage, with an Offer-action.
protected BayesianAgentForAuction.ACTIONTYPE	getActionType(Action lAction)
Bid	getMaxUtilityBid()
protected Bid	getNextBidAuction(Bid pOppntBid)
protected Bid	getNextBidSmart(Bid pOppntBid)
double	getOpponentUtility(Bid bid)
static java.util.ArrayList<AgentParam>	getParameters() Dummy variables, for testing only.
protected Bid	getSmartBid(Bid pBid) Wouter: Try to find a bid that has same utility for ourself but max utility for opponent.
protected Bid	getTradeOff(double pUtility)
static java.lang.String	getVersion()
void	init() This method is called by the protocol every time before starting a new session after the internalInit method is called.
protected double	Paccept(double u, double t1) This function determines the accept probability for an offer.
protected void	prepareOpponentModel()
protected Action	proposeInitialBid()
protected Bid	proposeNextBid(Bid pOppntBid)
void	ReceiveMessage(Action opponentAction) informs you which action the opponent did

Methods inherited from class negotiator.Agent

endSession, getAgentID, getName, getParameterValues, getSessionNumber, getSessionsTotal, getStrategyParameters, getUtility, internalInit, isUIAgent, loadSessionData, parseStrategyParameters, restartDataObjectsFolder, saveSessionData, setAgentID, setName, sleep

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

messageOpponent

protected Action messageOpponent

myLastBid

protected Bid myLastBid

myLastAction

protected Action myLastAction

fOpponentPreviousBid

protected Bid fOpponentPreviousBid

fSmartSteps

protected int fSmartSteps

fOpponentModel

protected OpponentModel fOpponentModel

fOpponentModels

protected OpponentModel[] fOpponentModels

CONCESSIONFACTOR

protected double CONCESSIONFACTOR

NUMBER_OF_SMART_STEPS

protected static final int NUMBER_OF_SMART_STEPS

See Also:

Constant Field Values

myPreviousBids

protected java.util.ArrayList<Bid> myPreviousBids

fPhase

protected BayesianAgentForAuction.PHASE fPhase

fRole

protected BayesianAgentForAuction.ROLE fRole

Constructor Detail

BayesianAgentForAuction

public BayesianAgentForAuction()

Method Detail

getVersion

public static java.lang.String getVersion()

getParameters

public static java.util.ArrayList<AgentParam> getParameters()

Dummy variables, for testing only. W.Pasman 19aug08

init

public void init()

Description copied from class: Agent

This method is called by the protocol every time before starting a new session after the internalInit method is called. User can override this method.

Overrides:

init in class Agent

prepareOpponentModel

protected void prepareOpponentModel()

ReceiveMessage

public void ReceiveMessage(Action opponentAction)

Description copied from class: Agent

informs you which action the opponent did

Overrides:

ReceiveMessage in class Agent

proposeInitialBid

protected Action proposeInitialBid()
                            throws java.lang.Exception

Throws:

java.lang.Exception

getNextBidAuction

protected Bid getNextBidAuction(Bid pOppntBid)
                         throws java.lang.Exception

Parameters:

pOppntBid -

Returns:

a counterbid that has max util for us and an opponent utility that is equal to 1-estimated utility of opponent's last bid. Or, if that bid was done already before, another bid that has same utility in our space as that counterbid.

Throws:

java.lang.Exception

getSmartBid

protected Bid getSmartBid(Bid pBid)
                   throws java.lang.Exception

Wouter: Try to find a bid that has same utility for ourself but max utility for opponent.

Parameters:

pBid -

Returns:

Throws:

java.lang.Exception

getNextBidSmart

protected Bid getNextBidSmart(Bid pOppntBid)
                       throws java.lang.Exception

Throws:

java.lang.Exception

getTradeOff

protected Bid getTradeOff(double pUtility)
                   throws java.lang.Exception

Throws:

java.lang.Exception

proposeNextBid

protected Bid proposeNextBid(Bid pOppntBid)
                      throws java.lang.Exception

Throws:

java.lang.Exception

getOpponentUtility

public double getOpponentUtility(Bid bid)
                          throws java.lang.Exception

Throws:

java.lang.Exception

chooseAction

public Action chooseAction()

Description copied from class: Agent

this function is called after ReceiveMessage, with an Offer-action.

Specified by:

chooseAction in class Agent

Returns:

(should return) the bid-action the agent wants to make.

getActionType

protected BayesianAgentForAuction.ACTIONTYPE getActionType(Action lAction)

Paccept

protected double Paccept(double u,
             double t1)
                  throws java.lang.Exception

This function determines the accept probability for an offer. At t=0 it will prefer high-utility offers. As t gets closer to 1, it will accept lower utility offers with increasing probability. it will never accept offers with utility 0.

Parameters:

u - is the utility

t - is the time as fraction of the total available time (t=0 at start, and t=1 at end time)

Returns:

the probability of an accept at time t

Throws:

java.lang.Exception - if you use wrong values for u or t.

getMaxUtilityBid

public final Bid getMaxUtilityBid()
                           throws java.lang.Exception

Throws:

java.lang.Exception